pol_hv003

Moderate

Polestar · Electric Cars

Battery Charge Level Anomaly

Quick Answer

Error code POL_HV003 on your Polestar Electric Cars means: Battery Charge Level Anomaly. This is usually fixable — see the step-by-step guide below.

Affected Models

Applies to all models

PS2 PS3 PS4 PS5 PS6

Likely Causes

BMS state-of-charge estimation algorithm drift requiring recalibration
Battery cell imbalance causing one or more cells to reach voltage limits early
Faulty cell voltage monitoring circuit within the battery management system
Temperature-related SOC reading inaccuracy in extreme cold or hot conditions
Accumulated charge cycles causing capacity mismatch between BMS model and physical cell condition

How to Fix It

Perform a full battery calibration cycle: drive to a low SOC then perform a slow full AC charge

Avoid charging to 100% regularly; use the 80% charge limit for daily use and reserve full charges for travel

Check for any pending OTA software updates that may include BMS calibration improvements

Review battery charge history in the Polestar app for anomalous patterns

Contact Polestar service if the anomaly persists after a full calibration cycle

Pro Tip

This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.

Parts You May Need

BMS software update via OTA

Cell voltage monitoring circuit board (if hardware fault confirmed)

Diagnostic interface for BMS data extraction

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